What Is a KYS File?
A file with the KYSfile extensionis an Adobe Photoshop keyboard shortcuts file.
Since this is a proprietary format, you probably won’t find other programs that can use these files.

If you double-click one to open it with Photoshop, nothing will show up on the screen.
Opening the file this way is the fastest method to start using it with Photoshop.
In that window is a tab calledKeyboard Shortcuts.

It’s probably down a similar path in macOS.
KYS files are actually justplain text files.
How to Convert a KYS File
This file format is used only with Adobe programs.
This is why there aren’tconversion toolsthat work with KYS file.
Still Can’t Open It?
There are other examples that could be given, but the idea is the same.
FAQ
Yes, you could import KYS shortcut files into Photoshop.
To add more than one or add files quickly, use the import/export tool.
SelectEdit>Presets>Export/Import Presets>Select Import Folder.
Choose your KYS files from this folder and clickImport Presetsto add them to Photoshop.
OpenAppData>Roaming>app Name>Settingson Windows.
On Macs, clickApplications>system Name.
To find KYS files for Illustrator on Mac, choosePresets>Language>Keyboard Shortcuts.